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MICROFRAME 386CX
MONOLITHIC SYSTEMS, INC. (COLORADO MSI)
MICROFRAME 386CX
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Processor
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80386DX
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Processor Speed
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20/25MHz
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Chip Set
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C & T
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Max. Onboard DRAM
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8MB
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Cache
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32KB
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BIOS
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AMI/Phoenix
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Dimensions
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349.2mm x 330.2mm
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I/O Options
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32-bit external memory cards (4), serial ports (2), parallel port
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NPU Options
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80387/3167
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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External battery
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J1
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Auxiliary keyboard
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J8
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Disk access LED
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J2
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Serial port 2
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J10
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No charge (key)
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J6 pin 1
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Parallel port
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J11
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Ready
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J6 pin 2
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Serial port 1
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J12
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Keylock
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J6 pin 3
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Reset switch
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J13
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Turbo
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J6 pin 4
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CPU ready LED
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J14
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No charge
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J6 pin 5
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Turbo LED
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J15
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Disk access
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J6 pin 6
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Speaker
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J34
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Reset
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J6 pin 7
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32-bit external memory card
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S1
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Ground
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J6 pin 8
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32-bit external memory card
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S2
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Speaker
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J6 pin 9
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32-bit external memory card
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S3
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+5VDC
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J6 pin 10
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32-bit external memory card
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S4
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Power LED & keylock
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J7
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Note:J2 is used only when a disk access signal is connected to J6 pin 6.
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USER CONFIGURABLE SETTINGS
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Function
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Jumper
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Position
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Monitor type select color
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J16
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pins 2 & 3 closed
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Monitor type select monochrome
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J16
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pins 1 & 2 closed
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Factory configured - do not alter
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J17
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N/A
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DRAM CONFIGURATION
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Size
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Bank 0
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Bank 1
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1MB
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(4) 256K x 9
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NONE
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2MB
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(4) 256K x 9
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(4) 256K x 9
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4MB
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(4) 1M x 9
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NONE
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8MB
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(4) 1M x 9
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(4) 1M x 9
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NPU CONFIGURATION
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Setting
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J22
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J23
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Disabled
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pins 1 & 2 closed
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pins 1 & 2 closed
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Enabled
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pins 2 & 3 closed
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pins 2 & 3 closed
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